/*
 * Copyright 2008-2010 Digital Enterprise Research Institute (DERI)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *          http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.sindice.rdfcommons.util;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * General utility math functions.
 *
 * @author Michele Mostarda (mostarda@fbk.eu)
 * @author Davide Palmisano (palmisano@fbk.eu)
 */
public class MathUtils {

    private MathUtils(){}

    public static final String md5(String s) {
        try {
            MessageDigest md5 = MessageDigest.getInstance("MD5");
            md5.reset();
            md5.update(s.getBytes());
            byte[] digest = md5.digest();
            StringBuffer result = new StringBuffer();
            for (byte b : digest) {
                result.append(Integer.toHexString(0xFF & b));
            }
            return result.toString();
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException("Should never happen, MD5 is supported", e);
		}
	}

}
